html{
  font-size: 625%;
  height: 100%;
}
body{
  margin: 0;
  font-family: "Source Sans Pro", "Helvetica Neue", Arial, "Microsoft YaHei", "微软雅黑", SimSun, "宋体", sans-serif;
  font-size: 16px;
  background: #111;
  height: 100%;
}
a{
  text-decoration: none;
}
a:link{
  color: #264bb7;
}
a:visited{
  color: #553a37;
}
.fs20{
  font-size: .42rem;
}
.fs18{
  font-size: .378rem;
}
.fs16{
  font-size: .336rem;
}
.fs14{
  font-size: .294rem;
}
.fs12{
  font-size: .252rem;
}
.fs10{
  font-size: .21rem;
}
.fs9{
  font-size: .189rem;
}
.fs8{
  font-size: .168rem;
}
.flex-center{
  display: flex;
  align-items: center;
  justify-content: center;
  align-content: center;
}
.flex-column{
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.flex-between{
  display: flex;
  align-items: center;
  justify-content: space-between;
  align-content: center;
}
.flex-round{
  display: flex;
  align-items: center;
  justify-content: space-around;
  align-content: center;
}
.fade-enter-active,
.fade-leave-active{
  transition: opacity .5s;
}
.fade-enter,
.fade-leave-to{
  opacity: 0;
}
@keyframes fade-in {
  0%{
    opacity: 0;
  }
  100%{
    opacity: 1;
  }
}
@keyframes fade-out {
  0%{
    opacity: 1;
  }
  100%{
    opacity: 0;
  }
}
